Respuesta :
A food web is a description of all the food chains in an ecosystem. In a food web, energy and living matter move up the trophic levels.
- The statement that BEST compares how matter and energy move among organisms in the food chain is matter flows among organisms and energy cycles among organisms in the system, but only matter is conserved (Option B).
- At each step up the food chain, approximately 90% of the energy is lost in the form of heat.
- Nutrients and living matter are passed between trophic levels and between the organisms and the physical environment, but it is conserved.
- All matter passes through the food chain, eventually decomposing to form new substances which can be used by new organisms.
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